Answer:
A
Explanation:
I'm 95% sure it's A but B could also be a likely answer.
true
hope this helps
endemic
indigenous
natural
constitutional
essential
fundamental
natal
original
real
wild
built-in
congenital
connate
connatural
genuine
hereditary
implanted
inborn
inbred
ingrained
inherited
instinctive
intrinsic
inveterate
inwrought
unacquired